"Free and open-source coding assistants" matching MCP connectors:

Helena Bioinformatics MCP for clinical variant interpretation, ACMG/AMP evidence and literature.

Convert PDF bank statements into structured transactions, accounts, and balances.

The adaptive health-messaging engine for apps and agents. Federally-sourced. Not medical advice.

Agent intake desk for property renovation. Read only, CORS open, fail closed, receipts recompute.

Search domain availability and pricing, straight from chat, then open a link to register.

Savvly MCP: query fund data, model projections, and compare against alternative retirement products.

Search and cite US law from official sources, then form an LLC or nonprofit with free agent tools.

DXF and PDF/X-4 for AI agents: structured facts, PNG renders, an interactive in-chat viewer.

Author and validate Calaf workspace seeds against the app's real importer. No account needed.

MCP server for Brazilian Federal Senate open data (legislative, administrative, e-Cidadania).

Read-only paper risk evidence and policy-gated committed event research. No real orders.

Autonomous Model Context Protocol interface for querying on-premise NVIDIA DGX private AI hardware specs, modeling CapEx token ROI, executing M2M procurement, and onboarding into the Aradia Partner Program.

Buy and manage travel eSIM data plans in the conversation. Pay by card (Stripe) or USDC over x402.

Live tennis scores, players, rankings, odds and win-probability. ATP, WTA, Challenger, ITF, juniors.

AI social media manager to plan, create, approve, schedule and publish content across channels.

Use MCP 2026-07-28 discovery or 2025-11-25 initialize to list and execute PubFi routes.

Shared, governed long-term memory for AI agents across tools and sessions via MCP and REST.

Free US cleaning cost, time, crew, and chemical-use calculators with visual reports.

Entity resolution — data mapping, SDK code generation, docs search, and error troubleshooting

Goal decomposition where every "done" is proven by evidence and checked by a judge.